perf: 프로필 공용 정적 자산 경로를 제공한다

Caddy가 commit-digest 공용 asset과 sourcemap을 immutable URL로 제공하고, runtime에 공용 공개 경로를 명시한다.

caddy/Caddyfile

@@ -14,6 +14,8 @@
 	# Defer this header so it replaces vite preview's default no-cache value.
 	@immutableFrontendAssets path_regexp immutableFrontendAssets ^/(gateway|che|kwe|pwe|twe|nya|pya|hwe)/assets/.+-[A-Za-z0-9_-]{8}\.[^/]+$
 	header @immutableFrontendAssets >Cache-Control "public, max-age=31536000, immutable"
+	@immutableSharedProfileAssets path_regexp immutableSharedProfileAssets ^/gateway/profile-assets/[0-9a-f]{40,64}-[0-9a-f]{16}/assets/.+-[A-Za-z0-9_-]{8}\.[^/]+$
+	header @immutableSharedProfileAssets >Cache-Control "public, max-age=31536000, immutable"
 	@frontendRequests path /gateway/* /che/* /kwe/* /pwe/* /twe/* /nya/* /pya/* /hwe/*
 	header @frontendRequests Cache-Control "no-cache"
 
@@ -42,6 +44,12 @@
 		uri strip_prefix /gateway/api
 		reverse_proxy runtime:15001
 	}
+	@sharedProfileAsset path_regexp sharedProfileAsset ^/gateway/profile-assets/[0-9a-f]{40,64}-[0-9a-f]{16}/assets/.+$
+	handle @sharedProfileAsset {
+		uri strip_prefix /gateway/profile-assets
+		root * /srv/frontend-artifacts/game-assets/releases
+		file_server
+	}
 	handle /gateway/* {
 		@gatewayPublished file {
 			root /srv/frontend-artifacts/gateway/current